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Published:
2025-10-03
Completed:
2026-01-05
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43,403
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31/31
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Kinktober 2025: Sonic Edition

Chapter 31: Mephadow/Sonadow: Breeding/ABO

Summary:

Shadow meets the one he's been looking for.

Notes:

That's a garbage summary, sorry. This is from a very stupid au I have, that could theoretically be tied to my previous Mephadow shorts in kinktober fics (you're welcome, whoever was asking for those).
Warnings for: sexual slavery (omegas are pets here again), mention of body modification, pregnancy (Mpreg), Trans Sonic and Shadow...I don't know this is just purely ridiculously indulgent and not even a real kinktober prompt but I wanted to finish with this
(Spoiler: this one has been written since like October 15th but I wanted to wait to publish it)

(See the end of the chapter for more notes.)

Chapter Text

Shadow lurked behind Mephiles as the bus drew to a stop in front of them. He knew his master wasn't mad at him, but an aura of disappointment loomed around him as he stepped aboard, Shadow following close on his heels. He didn't look at anyone else, only vaguely aware that there were other owners and pets sitting farther back as Mephiles collapsed into one of the very front seats with a soft sigh.

Shadow's ears folded back instinctively as he scooted forward, resting his chin on his master's knee, eyes staring up wetly as he murmured, “I'm sorry.”

Immediately, Mephiles leaned forward, his bright green eyes meeting Shadow's and his hand coming down to stroke through the sides of Shadow's quills, “Oh, dear heart...it's not your fault.”

Shadow couldn't help but feel like it was, and clearly that was evident on his face. Mephiles hooked his fingers under Shadow's chin, tilting his head up, “I want you to find the very best one and none of them was right.”

It was true.

The whole point of omegas—of pets like Shadow—was to get pregnant, to carry on generations of Mobians when the majority of the population was unable to carry to term. But there was a complication: omegas would only become pregnant, their bodies only agree to open up and flower, to certain partners.

Unfortunately for Shadow, Mephiles was sterile, so despite their many, many couplings, nothing had come of it. Now, they had finally decided—or, well, Mephiles had decided and Shadow had gone along with it because of course he had—that he should carry a child.

He'd spent the whole day surrounded by various alphas, all eager to pour their seed into him, and his body had rejected every single one. Shadow's cunt was swollen and sore between his legs, still leaking slightly from the come that had refused to be funneled into his womb, and he sighed again, rubbing his face against Mephiles' leg.

“What if I never find the right one?” His ears flattened fully as he uttered a phrase that was practically blasphemy: it was his purpose to be bred, his whole reason for being.

“Don't fret over that, my dear. Come up here,” Mephiles patted his lap, helping Shadow to stand and settle, straddling him, so the black hedgehog could tuck his nose into the crook of Mephiles' neck and inhale his scent. Charcoal and ash, cool nights and cold waters—clear, clean and refreshing. Cool hands stroked down his back, a deep hum in his ear. Not for the first time, Shadow wished that Mephiles could be the one to get him pregnant.

“How are you feeling down here?” Hands moved lower, to the swell of his ass, and Shadow understood.

“Sore...stretched.” Shadow rubbed his face against Mephiles more, coating himself in the other hedgehog's scent, “Empty...”

“I'm sorry my dear. Might I offer a solution to at least some, if not all, of those problems?”

“What?” Shadow's breath ghosted across Mephiles' neck, wondering what his master had planned.

“Would you like to sit your pretty ass on my cock while we ride home? I can rub that abused pussy while you relax.”

“That sounds nice...” Shadow sighed, shifting slightly forward to offer his other hole to Mephiles' nimble fingers. His master was adept at stretching him, his odd biology allowing for him to find additional lubrication unnecessary, so all Shadow had to do was breathe, feeling fingers pushing into him, a comfortable and familiar sensation as his master pet at his insides.

He didn't need much preparation: his omega instincts still active and keeping him loose and relaxed from his earlier attempts at breeding, so after only a few minutes, Mephiles murmured, “I'm going to spin you around now and put it inside of you.”

“Okay,” Shadow mumbled, letting his master handle him, gently spinning him around to lean back against Mephiles' cool chest, and happily letting his master's cock push inside of him to its second home.

Shadow sighed, deep and contented, relaxing fully and letting his head fall backwards on Mephiles' shoulder, eyes fluttering closed as every breath let him feel the comfortable fullness. One of Mephiles' hands stayed around his middle, holding him close, while the other slid down, just gently and softly rubbing at his swollen and aching pussy.

His mind wandered, imagining...what would a perfect mate be like?

He was pretty sure a lot of it was the smell. None of the alphas who had tried to breed him today had smelled...real. They'd all carried a potent aroma of chemicals, thick and cloying and instead of wanting to inhale them, he'd wanted to snort, clear his nose, and then hold his breath.

Shadow was sure he didn't care about breed, although another hedgehog would be nice—he knew it was often easier for omegas to carry safely and fully if their offspring was genetically the same, although certainly not impossible if not. But for the sake of his imaginings...another hedgehog. Eyes like Mephiles'--green and piercing, able to see through him.

Fur...he didn't care much. Maybe something bright, bold, to contrast his own dark fur. A bright red, like his highlights maybe...or cerulean blue, a complete contrast.

He sighed, snuggling more comfortably against his Master, when his soft voice whispered in his ear, “Shadow.”

Shadow wrinkled his nose and flicked his hear. He knew they weren't back yet, and he didn't want to be drawn out of his nice daydream.

“Shadow...” Mephiles whispered to him again, his fingertips spreading Shadow's lower lips, “You might want to look.”

With a soft, vaguely grumpy huff, Shadow's eyes creaked open a slit...and then shot open the rest of the way, his breath catching in his throat.

Kneeling in front of him, only a few feet away, was the creature of his dreams.

A hedgehog—boldly blue, a color so vibrant and unusual that he seemed to make the whole bus feel brighter. Piercing green eyes stared curiously at him—not nearly as harsh or pointed as Mephiles', more open, but still feeling like his gaze pinned Shadow to his seat.

He was also extremely pregnant, his lower abdomen swollen with child.

The blue hedgehog opened his mouth, a soundless whine, before glancing behind him. Shadow's eyes darted up, only for a beat, to see the hedgehog's master—a monochromatic jackal, dressed all in black and white, watching with curiosity.

But Shadow's gaze was immediately drawn back to the hedgehog on the floor in front of him, who had scooted closer, at the end of the leash held loosely in the jackal's hand, his little black nose working.

Shadow took a breath, and then another, deeper.

Under the slightly moldy scent of the bus was another, richer, greener. Like earth after a rainstorm, like wind in the trees, and he knew, he knew it was that hedgehog and he could feel something inside of him shiver, twitch and tingle.

Shadow was not aware of the silent communication between Mephiles and the jackal, but he was spectacularly aware of when the red leash tying the hedgehog was dropped, and he scooted far closer, almost close enough to touch, those green eyes darting between Shadow's face and then down to his spread-open cunt, asking, begging.

“I think he wants to taste you Shadow,” Mephiles whispered, his fingers bracketing Shadow's pussy, showing off the swollen flesh, “Do you want him to?”

“Yes...” Shadow's first reply was so quiet that he wasn't sure that Mephiles could even hear: all of his attention was focused on the hedgehog between his legs. He licked his lips and tried again, “Yes, please.”

The blue hedgehog didn't wait for his master's permission, just diving into Shadow's cunt with a fervor that almost immediately had Shadow's eyes rolling back in his head.

It was divine. It was achingly, perfectly, deliciously wonderful. The very first touch almost hurt, swollen and abused flesh being touched by slick heat again, but then it dissolved into nothing but pleasure. The blue hedgehog's tongue was everything he had ever wanted, lapping up and down his outer lips, where Mephiles' hand had retreated from, before circling his clit, then suckling the little pearl. Shadow's hips jolted, and Mephiles held him down with a chuckle.

“A little sensitive my dear?”

“Mhmm,” Shadow nodded, one of his hands clutching reflexively until Mephiles took it, holding it tight.

The blue hedgehog's eyes had fluttered closed, navigating solely by touch, his tongue now slipping down, pressing in...and Shadow wanted him in, in, in, and the blue hedgehog obliged, pressing deeper until his little black nose was smushed against Shadow, breath tickling as his tongue worked deeper, lapping and curling.

Shadow's hips tried to roll forwards again, only kept pinned in place by Mephiles' strength, and he whimpered, reaching with his free hand, delicately, questioningly, to rub against the blue hedgehog's ear.

He knew. He knew without asking that he wanted to have this hedgehog's babies. He ached with the fact that he might not be able to—the blue hedgehog's already pregnant belly told him the chances were remarkably unlikely, but his omega brain didn't care: his cunt wanted to suck every bit of this hedgehog inside and keep him there, hold him there deep inside Shadow's most secret place, only shared before with his master.

“Hmmm...” from across the aisle, the jackal's voice rumbled, “Sonic likes you...he doesn't like many people.”

Sonic.

The most beautiful name Shadow had ever heard, and he stroked a velvety soft ear in encouragement as Sonic's tongue tried to delve deeper, impossibly deeper, and when that proved absolutely impossible, he pulled out, instead using his tongue to give Shadow's aching pussy deep, thorough licks, all the way from where Mephiles' cock was still pushed inside of him up to his clit, throbbing and swollen.

“Nghaaa...” Shadow groaned, a deep trembling starting somewhere behind his stomach and spreading to his whole body, his toes curling and flexing.

“Are you going to come?” Mephiles asked, and Shadow nodded desperately, only seconds before he gasped, arching his back as much as he could as he coated Sonic's face with squirt...something he only rarely did even for Mephiles.

Pleasure rolled through him, waves crashing and retreating only to return, taking minutes, ages to finally recede, leaving Shadow spent, panting.

Deep flush covered his cheeks as he glanced down through long eyelashes to find Sonic's muzzle dripping with his release, the hedgehog staring up at him through his own lidded eyes, licking the fluid off with the same tongue that had so recently been inside of Shadow.

Shadow whimpered.

And then Sonic stood up. Shadow stared at the soft swell of his chest over the distinctly more apparent shape of his pregnant belly—but then his eyes dropped lower, and everything in his body seemed to stop.

Bobbing underneath Sonic's bump was a cock.

Nothing impressive—male-presenting omegas never were, but Shadow spectacularly didn't care.

He wanted that cock inside of him.

No...no he NEEDED that cock inside of him. He was trembling with need, his pussy fluttering and clenching, practically gasping. Something inside of him twinged, like a sparkle, a little twinge, and he whimpered, turning his nose into Mephiles' neck.

“I'm flowering.”

“Oh...” Mephiles' voice was soft, reverent as he stroked Shadow's side, “Oh baby...good boy...do you want him to make you pregnant? Do you want his cock?”

“More than anything,” Shadow whined, his eyes fluttering open, his hips jerking forwards...and again, he was unaware of the quick communication taking place over his head, but he didn't care, because Sonic's pregnant belly was pressing against his own flat plane, and then his cock was slipping inside—so easily, so gently, even with Mephiles already taking up so much space, and it was perfect and Shadow was gone.

He knew he moaned. He whimpered. He wailed. He begged and pleaded for something he couldn't articulate. His body pulled on Sonic's cock, trying with everything it had to keep him inside, together, where he knew that Sonic belonged.

He probably came again. Maybe twice. He couldn't keep count. He knew Mephiles was there, stroking his side, holding his hand, whispering how good and perfect he was being for his breeding, asking him how good he felt.

He didn't care that there were other people around them, that someone he didn't know was certainly watching.

He just cared about that cock, inside him...inside him...and it was coming inside him.

Heat surged upwards, his pussy quite literally sucking the cream deep inside, past the barrier that had refused to open for any other cock, deep into his womb where it settled, thick and perfect.

Shadow panted, his head spinning as he came back into the world. Mephiles was petting him, praising him, and Sonic was grinding their hips together gently, slick dripping down between their thighs.

The bus stopped.

“This is us Shadow,” Mephiles hummed, and Shadow gasped, staring up at the green eyes hovering above him. He couldn't...he had this, he couldn't let it go...

“Sonic and Infinite are coming home with us.” Mephiles whispered, and Shadow collapsed in relief.

Sonic pulled out, his leash collected by the jackal who must be Infinite, while Mephiles swept Shadow's fucked-out body up into his arms and together they stepped down.

Shadow couldn't stop watching Sonic, the way he moved, a captured grace clearly hindered by his late-term pregnancy but still enchanting. Green eyes kept slipping up to meet his own, a quiet need.

He wasn't listening to Mephiles and Infinite, but he couldn't help to interrupt, “Why doesn't he say anything?”

A beat, before Infinite answered, his voice heavy.

“Sonic can't speak, Shadow. His prior master...did not think it seemly that omegas be, as he described it to me, 'mouthy' and had him fixed.”

Shadow's face fell, while Sonic shrugged even though his face said that he did, in fact, mind.

“I wish I could have gotten to him sooner...” Infinite sighed, “He wasn't flowering for any of his previous owners; of course all he needed was a gentler, more persuasive hand.”

“Is this his first litter?” Mephiles asked as they made their way towards the penthouse that he and Shadow shared.

“Yes. He's been doing remarkably well and we're quite excited.” Infinite smiled, and Sonic preened under the attention.

Shadow didn't remember much of the elevator ride upstairs; what he did know was that the moment he was set on the living room rug by his master, he was face down, ass up, perfect presentation position, and less than a heartbeat later, Sonic was on him, thrusting inside.

They would fuck until they were both exhausted, come leaking out of Shadow's hole, his belly full and sated, blue and black collapsed into each other's arms; pets ignorant of the deals made by Infinite and Mephiles over coffee, unaware that these strangers who had met by chance were now, somehow, going to be a family.

Notes:

And there we go! Kinktober actually FINISHED only uh..heheh...three? Months late? Maybe just two and a half.

I am trying to stick to writing at least a little bit each day and work on getting my three big fics done (that's I Didn't Ask for This, Mind Over Matter, and The Grass is Always Greener). There's also a sequel to We're In This Together that's partially done too...

Anyways. Thanks for hanging out and enjoying ridiculously kinky sex. May you stay silly this coming year!

Notes:

Hah! I bet you thought I wasn't going to finish this. NOPE just had a CRAZY November but I am going to get these last couple of chapters done.